Reed 5A
Reed 5A tonearm introduced as angling- 90o -tangential-pivot-tonearm, it is based on Double Birch/Thales geometry and will complement their tangential tonearm lineup.
Below is the scheme of Double Birch/Thales geometry ( Fig.1).
Tonearm geometry is optimised for minimal tracking error.
P1, O1, P3 – Thales’ semicircle,
P1-A1-P3, P1-A2-P3, P1-A3-P3 angles are 90⁰ each,
A1,1B1 = A2,1B2= A3,1B3 segments represent tonearm length,
1B – vertical axis of the tonearm,
1P2 – centre of the circle, which is drawn through three points -1B1,1B2,1B3,- axis of rotation of the back link component
2P2 – centre of the circle, which is drawn through three points -2B1,2B2,2B3,- axis of rotation of the front link component
1B1,2B1 = 1B2,2B2 = 1B3,2B3 – tonearm lever.
Armtube suspension system is similar to the one used in Reed 3P tonearm.
Tonearm’s back link uses low-noise ceramic rolling bearings.
Lever uses low-noise ceramic rolling bearing and rests on the sapphire – molybdenum carbide thrust bearing.
Sapphire – molybdenum carbide thrust bearings are also used for tonearm’s front link, vertical and horizontal axes.
Tonearm has VTA and azimuth setup and can be configured with Reed or SME (universal headshell connector) headshells.
To make sure tonearm setup is precisely horizontal, tonearm has integrated level and horizontal plane adjuster.
Comparing to regular pivot tonearms, Reed 5A does not require antiskating and has much less absolute tracking error (max. tracking error is +/- 4 Minute of Angle (MOA) (Fig.2).
Pivot tonearms – approx. 1.2 – 2.5 deg. (Fig.3).
Comparing to other tangential tonearms, Reed 5A does not require any additional devices to work (e.g. compressors, electronic controllers), is compact and can be easily mounted on a wide range of turntables.
SPECIFICATIONS – Red 5A
| Mounting distance | 251 mm (platter diam.max.= 330 mm) |
| Tracking error | +/- 4 Minute of Angle (MOA) |
| Effective mass | 10g -16 g depends on the armwand material |
| Height adjustment | compatible with 26÷46 mm height platters |
| VTA adjustment | precision +/- 0.2 mm |
| Azimuth adjustment | +/- 8 deg |
| Downforce range | 10÷30 mN (cartridge mass 5.5 g – 19.5 g,(4.0 g – 25,0 g)) |
| Offset angle, overhang | 0 deg, 0 mm |
| Integrated level, accuracy | +/- 2 mm/m |
Approximate effective mass of Reed tonearm in grams. Armwand’s effective mass can be adapted to your needs in a range of 8-16 grams.
| Armwand | |
| Wenge | 10-14 |
| Macassar ebony | 10-16 |
| Cocobolo | 12-16 |
| Teak (light, dark) | 8-12 |
Sample Finish
Armwand Finishes
Operating principle of the tonearm is illustrated in
The designer and company owner, Vidmantas Triukas, is radio engineer, working in hi-fi audio equipment field since 1985.
He was working in scientific acoustic and ultrasound area, researching the transmission of acoustic noise in different materials and has three patented inventions in this field.
In 1987, Vidmantas Triukas with a few friends built an “audio set”, consisting of turntable, speakers and an amplifier, and presented it in USSR’s largest technical achievement trade show in Moscow.
For various innovations ( turntable motor automatic speed control, amp with very low linear distortions etc.) it was awarded a bronze medal in audio equipment category.
After 1990s Vidmantas started business in another area, however audio still was his passion all these years.
In 2007 he decided to start business and offer something amazing to the market.
After a year of continuous research, prototyping, design and testing he offered first Reed series tonearm.
Since then, his company works for its valued customers and tries to bring something special to the audiophile community.
Despite that Vidmantas is an inventor and a technical designer, he is also very passionate art lover. He studied art history in Sankt Petersburg (formerly Leningrad) in 1980 – 1982. 
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